I can buy my iPod Touch online from Apple, or locally at a mall store. If I buy it locally I save shipping costs but will pay local sales tax. Does Apple charge local sales tax for online purchases? I'm debating 8 vs 16 gig. I don't anticipate downloading many, if any, movies and I don't expect to carry around a huge music library. I'll be using the device largely as a PDA-- address book, calendar, plus a drug database I use in nursing, some fun games etc. On one hand, extra memory never hurts. OTOH, the extra $70 could buy a LOT of apps. Any thoughts?